[3] In August 2013, Sarkar temporarily halted the development of Purbachal New Town Project by Rajdhani Unnayan Kartripakkha until it received the clearance from the Department of Environment.
[4] Sarkar was made a permanent judge of the High Court Division on 7 October 2013.
[2][5] Sarker and Justice Mohammad Emdadul Haque rejected a petition that challenged Islam being the state religion of Bangladesh despite a 2011 amendment that restored secularism to the constitution on 7 September 2015.
[6][7] In March 2020, Sarkar recommended a retired judge be made the head of International Leasing and Financial Services Limited, which had money embezzled by Prashanta Kumar Halder.
[10] In October 2021, Sarkar appointed a four-member team to manage Evaly, an e-commerce site which was going through financial crises, led by retired judge AHM Shamsuddin Chowdhury Manik.